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A versatile optical profilometer based on conoscopic holography sensors for acquisition of specular and diffusive surfaces in artworks  (2017)

Authors:
Gaburro, Nicola; Marchioro, Giacomo; Daffara, Claudia
Title:
A versatile optical profilometer based on conoscopic holography sensors for acquisition of specular and diffusive surfaces in artworks
Year:
2017
Type of item:
Contributo in atti di convegno
Tipologia ANVUR:
Contributo in Atti di convegno
Language:
Inglese
Name of journal:
PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING
ISSN of journal:
0277-786X
N° Volume:
10331
Congresso:
Optics for Arts, Architecture, and Archaeology VI 2017
Place:
Munich, Germany
Period:
28-29 June 2017
ISBN:
978-151061107-8
Page numbers:
103310A-103310A-9
Keyword:
optical profilometry, conoscopic holography, surface analysis, portable instrumentation, artworks
Short description of contents:
Surface metrology of artworks requires the design of suitable devices for in-situ non-destructive measurement together with reliable procedures for an effective analysis of such non-engineered variegate objects. To advance the state-of-the-art it has been implemented a versatile optical micro-profilometry taking advantage of the adaptability of conoscopic holography sensors, able to operate with irregular shapes and composite materials (diffusive, specular, and polychrome) of artworks. The scanning technique is used to obtain wide field and high spatially resolved areal profilometry. The prototype has a modular scheme based on a set of conoscopic sensors, extending the typical design based on a scanning stage and a single probe with a limited bandwidth, thus allowing the collection of heights data from surface with different scales and materials with variegate optical response. The system was optimized by characterizing the quality of the measurement with the probes triggered in continuous scanning modality. The results obtained on examples of cultural heritage objects (2D paintings, 3D height-relief) and materials (pictorial, metallic) demonstrate the versatility of the implemented device.
Product ID:
100051
Handle IRIS:
11562/972108
Last Modified:
March 20, 2018
Bibliographic citation:
Gaburro, Nicola; Marchioro, Giacomo; Daffara, Claudia, A versatile optical profilometer based on conoscopic holography sensors for acquisition of specular and diffusive surfaces in artworks in «PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING» vol. 10331  in Optics for Arts, Architecture, and Archaeology VIProceedings of "Optics for Arts, Architecture, and Archaeology VI 2017" , Munich, Germany , 28-29 June 2017 , 2017pp. 103310A-103310A-9

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Scan4Reco - Multimodal Scanning of Cultural Heritage Assets for their multilayered digitization and preventive conservation via spatiotemporal 4D Reconstruction and 3D Printing Department Informatica Claudia Daffara
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